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title: Used BMW 3 Series vs Audi A4 in Sydney: the real gap in a three-year service bill
canonical: https://blog.maxautosydney.com.au/en/used-bmw-3-series-vs-audi-a4-in-sydney-the-real-gap-in-a-three-year-service-bill-58400dca4f
---

So today we're not picking sides. We're laying out the quote ranges our M&F workshop techs in Concord actually see servicing and repairing these two — you do the sums, you pick the car. One honest line up front: both are German, and once they're out of factory warranty, neither is cheap to keep. The only difference is *where* the money goes.

## Scheduled servicing: line-ball, so don't expect to save here

Both BMW and Audi run capped-price servicing in Australia, roughly a service a year or every 15,000 km. BMW's five-year/80,000 km plan for the 3 Series lands a touch over $2,500; Audi's five-year/75,000 km plan for the A4 sits around $2,700 — call it about $500 a year either way. Line-ball.

![Illustration · Scheduled servicing: line-ball, so don't expect to save here](https://breezecdn.org/tenants/maxauto/articles/58400dca-4f84-441c-9bf4-5251ab8843ae/img-2.jpg)

*Illustration · Scheduled servicing: line-ball, so don't expect to save here*

Once you're out of warranty and onto a good independent, you'll save 30–40%: a minor service (oil and filter) runs about $280–450, an intermediate $480–750. What our techs will tell you is that these Germans hate a skipped service — let the oil overrun and the odds of oil leaks and oil burning climb noticeably. You can check this yourself: flip through the logbook and see whether the previous owner serviced it on the kays. The more gaps, the more questions to ask.

## Gearbox oil and brakes: the two lines buyers forget

These are the two most owners skip over — and they're the hidden weight in a three-year bill.

![Illustration · Gearbox oil and brakes: the two lines buyers forget](https://breezecdn.org/tenants/maxauto/articles/58400dca-4f84-441c-9bf4-5251ab8843ae/img-3.jpg)

*Illustration · Gearbox oil and brakes: the two lines buyers forget*

Gearbox oil — the 3 Series uses a ZF 8-speed auto that BMW badges "sealed for life," but techs generally reckon it wants a change around 60,000–100,000 km, roughly $400–700 at an independent. Plenty of A4s run the S tronic dual-clutch (the quattro cars), and that gearbox oil and filter is due too, about $400–600. Don't take "sealed for life" at face value on either.

Brakes — prestige German sedans are heavy and tuned to stop hard, so pads and rotors wear faster than the equivalent Japanese car. A set of front pads and rotors starts around $600 at an independent, and the two cars aren't far apart.

## Each car's party trick: this is where the gap opens up

Servicing and wear items are line-ball. The real difference lives in each car's signature fault.

![Illustration · Each car's party trick: this is where the gap opens up](https://breezecdn.org/tenants/maxauto/articles/58400dca-4f84-441c-9bf4-5251ab8843ae/img-4.jpg)

*Illustration · Each car's party trick: this is where the gap opens up*

**BMW (F30 / G20) — oil leaks.** It's almost the calling card of this generation: the valve cover gasket and oil filter housing gasket harden and start weeping, usually somewhere past 70,000–80,000 km. About $400–900 an item at an independent. Not fatal, but you need to get in the habit of checking the dipstick rather than waiting until it's weeping a black mess.

**Audi A4 (B9 2.0 TFSI) — turbo and carbon.** The direct-injection engine is prone to carbon build-up on the intake valves, so somewhere around 70,000–100,000 km it may want a walnut-blast intake clean, $400–800. Turbos generally fail from oil starvation — low oil or carbon choking the oil feed — and when one lets go it's a big job. Water pump and thermostat are common B9 items too, $800–1,200 at an independent.

## The one-line verdict: which bill scares you more

![Illustration · The one-line verdict: which bill scares you more](https://breezecdn.org/tenants/maxauto/articles/58400dca-4f84-441c-9bf4-5251ab8843ae/img-5.jpg)

*Illustration · The one-line verdict: which bill scares you more*

Over three years the totals actually run close — what differs is *how* you spend it. The BMW's faults are more predictable: leaks you can see, fix affordably, one item at a time. The Audi is quieter day to day, but a turbo or water pump is a four-figure hit if it goes — though with servicing kept up, the odds of that are low.

If a sudden big repair is what you dread, the BMW's leaks are the easier thing to catch early and sort in stages. If you can wear "fine most of the time, occasionally a heavy one," the A4's smoothness is genuinely the nicer drive. Either way the same rule holds: the car has to be clean underneath to start with. On both, our M&F techs check the leak zones (BMW) and the turbo, intake and water pump (Audi) when we buy them in, and write what they find on the inspection sheet — rather than you finding it in month three. Since 2013, every car has gone over the hoist here before it's listed. No exceptions.

Want us to check over a 3 Series or A4 you've found somewhere else, or a heads-up when one comes up? Come by the yard or drop us a message.